J/AJ/139/2130 ALFA-ZOA precursor observation (Henning+, 2010)
The Arecibo L-band Feed Array Zone Of Avoidance survey.
I. Precursor observations through the inner and outer Galaxy.
Henning P.A., Springob C.M., Minchin R.F., Momjian E., Catinella B.,
McIntyre T., Day F., Muller E., Koribalski B., Rosenberg J.L.,
Schneider S., Staveley-Smith L., van Driel W.
<Astron. J., 139, 2130-2147 (2010)>
=2010AJ....139.2130H 2010AJ....139.2130H
ADC_Keywords: Surveys ; Galaxies, radio ; H I data ; Radial velocities
Keywords: galaxies: distances and redshifts - galaxies: fundamental parameters -
large-scale structure of universe - surveys
Abstract:
The Arecibo L-band Feed Array (ALFA) is being used to conduct a
low-Galactic latitude survey, to map the distribution of galaxies and
large-scale structures behind the Milky Way through detection of
galaxies' neutral hydrogen (HI) 21cm emission. This Zone of
Avoidance (ZOA) survey finds new HI galaxies which lie hidden behind
the Milky Way, and also provides redshifts for partially obscured
galaxies known at other wavelengths. Before the commencement of the
full survey, two low-latitude precursor regions were observed,
totaling 138deg2, with 72 HI galaxies detected. Detections through
the inner Galaxy generally have no cataloged counterparts in any other
waveband, due to the heavy extinction and stellar confusion.
Detections through the outer Galaxy are more likely to have Two Micron
All Sky Survey counterparts. We present the results of these precursor
observations, including a catalog of the detected galaxies, with their
HI parameters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 94 72 HI galaxy parameters from ALFA ZOA precursor
observations
table2.dat 119 81 Multiwavelength counterparts in the literature
of ALFA ZOA precursor detections
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See also:
II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/A+A/505/29 : HI observations of 2MASS galaxies in ZoA (van Driel+, 2009)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name ALFA ZOA designation (JHHMM+DDMM)
12- 13 I2 h RAh Right ascension (J2000.0)
15- 16 I2 min RAm Right ascension (J2000.0)
18- 19 I2 s RAs Right ascension (J2000.0)
20 A1 --- u_RAs Uncertainty flag on RA
22 A1 --- DE- Declination sign (J2000.0)
23- 24 I2 deg DEd Declination (J2000.0)
26- 27 I2 arcmin DEm Declination (J2000.0)
29- 30 I2 arcsec DEs Declination (J2000.0)
31 A1 --- u_DEs Uncertainty flag on DE
33- 38 F6.2 deg GLON Galactic longitude
39 A1 --- u_GLON Uncertainty flag on GLON
40- 45 F6.2 deg GLAT Galactic latitude
46 A1 --- u_GLAT Uncertainty flag on GLAT
48- 51 F4.1 Jy.km/s FHI ? HI flux integral
53- 55 F3.1 Jy.km/s e_FHI ? rms uncertainty on FHI
57- 61 I5 km/s HV Heliocentric velocity (cz) taken as the
midpoint of the profile at the 50% level
63- 64 I2 km/s e_HV ? rms uncertainty on HV
65 A1 --- u_HV Uncertainty flag on HV
66- 69 I4 km/s W50 ? Full velocity width of the HI line
measured at the 50% level
71- 72 I2 km/s e_W50 ? rms uncertainty on W50
74- 76 I3 km/s W20 ? Full velocity width of the HI line
measured at the 20% level
78- 79 I2 km/s e_W20 ? rms uncertainty on W20
81- 83 I3 Mpc DLG ? Distance to the galaxy (1)
85- 89 F5.2 [Msun] logMHI ? HI mass
91- 94 F4.2 [Msun] e_logMHI ? rms uncertainty on logMHI
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Note (1): correcting the velocity to the Local Group frame,
VLG=VH+300sin(l)cos(b) and taking H0=71km/s/Mpc.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name ALFA ZOA designation (JHHMM+DDMM)
11 A1 --- n_Name [*] note on name (1)
13- 18 F6.2 deg GLON [-180/180] Galactic longitude
20- 23 F4.1 mag AB Foreground extinction in B band estimated by
the IRAS DIRBE maps of Schlegel et al.
(1998ApJ...500..525S 1998ApJ...500..525S)
25- 42 A18 ---- HI HI counterpart name (2)
44- 46 F3.1 arcsec SepHI ? Angular separation from HI counterpart
(literature - ALFA ZOA)
48- 50 I3 km/s dVHI ? Velocity difference from HI counterpart
(literature - ALFA ZOA)
53- 69 A17 --- Opt Optical counterpart name (3)
71- 73 F3.1 arcsec SepOpt ? Angular separation from Optical counterpart
(literature - ALFA ZOA)
75- 76 A2 --- --- [2M]
77- 92 A16 --- 2MASS 2MASS counterpart name (HHMMDDdd+DDMMDDd)
94- 96 F3.1 arcsec Sep2M ? Angular separation from 2MASS counterpart
(literature - ALFA ZOA)
98-101 A4 --- --- [IRAS]
102-111 A10 --- IRAS IRAS counterpart name (HHMMm+DDMM)
113-115 F3.1 arcsec SepIR ? Angular separation from IRAS counterpart
(literature - ALFA ZOA)
117-119 I3 km/s dV ? Velocity difference between the ALFA ZOA
source and any non-HI velocity measurement
(literature - ALFA ZOA)
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Note (1): * indicates that the galaxy lies on an edge of the survey region,
so parameters are uncertain
Note (2): HIPASSJHHMM+DD, CAPHHMM+DD, ADBSHHMMSS+DDMM, HIZOAJHHMM+DD,
ZOAGLLL.ll+BB.bb, aka HIPASSJHHMM+DD, UGCNNNNN, IRASHHMMm+DDMM or
2MHHMMDDdd+DDMMDDd
Note (3): PGCNNNNNN, UGCNNNNN or ZOAGLLL.ll+BB.bb
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-May-2012